ufw - Ufw stands for Uncomplicated Firewall, and is program for managing a netfilter firewall.
TinyWall - Lightweight and non-intrusive firewall
Gufw - Gufw is an easy, intuitive way to manage your Linux firewall.
Windows 10 Firewall Control - Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.
Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.
Firestarter - Firestarter is an Open Source visual firewall program.